I was in the local ski shop last week trying on some boots and the best (only) fitting boot was the dragon 110, the only boot with enough room above my instep that I have ever tried on, I have very high arches and most boots don't even come close to fittting around this area. No other issues with my feet when fitting a boot. I didn't purchase them on the day as the bootfitter wanted me to bring back my custom inserts, went back today and the boots had been sold after they said they were holding for me, and also the last pair they had.
The shop isn't stockinng Technica this year, and after looking on the technica web site they have changed there boot range, so I was wondering if they had a new model to replace dragon with same volume around the arch and instep area. I would prefer a slightly stiffer boot in a 120 or 130 flex if possible.
After looking on the technica website, the demon series sounds similiar as has a 100mm last and high performance but doesn't mention in step volume. None of the shops around here seem to have any high end Technnica boots in 29.5 in stock to try.
If you have any other question please let me know.